Trying to understand UNIX system calls on XV6

c arrays pointers unix xv6

The array of syscalls is syscall.c makes use of the designated initialization syntax where you can specify at which index to assign the value.

static int (*syscalls[])(void) = {   [SYS_fork]    sys_fork,}

SYS_fork, defined as 1, specifies the index where to assign sys_fork. Thus the order of the elements doesn't matter using this syntax.

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